This paper proposes a novel design method of RFID tag antenna on metallic surfaces using a lossy substrate such as FR4. The proposed design reduces the substrate loss and improves the radiation… (More)

This letter presents a novel design of the UHF RFID tag antenna suitable for embedded use in a concrete floor (CF). The tag antenna is used to track and trace the location of a shipyard transporter.… (More)

A compact circularly polarized antenna with a wide beamwidth and high return loss (RL) is presented. The antenna consists of four U-shaped metal strips sequentially rotated and fed with a 90 ° phase… (More)

A 0.13 mum CMOS 2.4 GHz balun-mixer is proposed, where a current-reused noise-canceling topology is adopted as the transconductance stage to reduce dc power consumption. After frequency conversion,… (More)

This paper presents a novel H-shaped isolation wall structure (called as H-wall in this paper) that effectively suppresses the mutual coupling and improves the isolation between two closely spaced… (More)

A planar loop antenna producing uniform horizontal magnetic fields over its plane is presented. The antenna consists of a pair of two-turn spiral coils that are excited alternately. To avoid the bad… (More)